Icebergs float off the coast of Greenland. Scientists believe Greenland – with its melting ice caps and disappearing glaciers – is an accurate thermometer of global warming. (PHOTO CREDIT: URIAL SINAI/GETTY IMAGES) FROM CNN's Jack Cafferty: Global warming has become a religion among the "First World urban elites." That's just one of the explosive charges … Continue reading More or less concerned about global warming than 1 year ago?